A combination of petrophysics and geophysics was used to develop seismic criteria that could be used to optimize the location of development wells. An analysis of horizon attributes from the 3-D seismic survey produced a detailed reservoir fault map. Analysis of log data, seismic modeling, and horizon attributes produced an estimated reservoir porosity map. These have been used to help optimize the position of development wells in the field.

A detailed interpretation was made of several horizons in the 3-D seismic survey, including the Top Rotliegend (top reservoir) reflection. A set of seismic horizon attributes, based on horizon structure and reflection amplitude, were generated at the Top Rotliegend. Reservoir faults with throws as small as 15 ft (5 m) were interpreted and mapped. Since many faults were sealed by diagenesis subsequent to faulting, these results have helped identify potential compartmentalization and have allowed development wells to be positioned away from these potential barriers to flow.

Synthetic seismic modeling using log data from exploration wells indicated a linear relationship between reservoir reflection amplitude and average reservoir porosity. Log-based wavelet extraction was used to correct phase errors in the seismic data. Phase-corrected reflection amplitude from the Top Rotliegend reflection was correlated with porosity at exploration wells. The resulting empirical amplitude-porosity relationship has been used to successfully predict gross reservoir porosity in several wells drilled since the work was concluded.